The Browns wrote to Mrs. Anmary to______ her warm reception during the visit to her sanatorium.
| A．acknowledge | B．consult | C．owe | D．evaluate |
The program, __________ at improving the students' ability of listening and speaking, will surely be a success.
| A．to aim | B．aimed |
| C．to aiming | D．having aimed |
He didn't answer, with his gun __________ at David.
| A．aims | B．to aim |
| C．aiming | D．being aimed |
Teachers are now aware of the difficulty that some students have __________ attention.
| A．paid | B．to pay | C．paying | D．pay |
—I made it at last. I am on top of the world!
— __________
| A．Congratulations. | B．Don't fall down! |
| C．Oh, really? | D．So far, so good. |
Liu Xiang trained hard before the Asian Games in Guangzhou, and it __________. He won the gold medal in 110 meters' hurdles.
| A．worked out | B．paid off |
| C．marked out | D．got through |